Fertility treatments could be revolutionised by what scientists believe is a breakthrough in developing laboratory-grown eggs.

02:34, UK,Friday09February2018

Image:Close-up of human egg after development in the lab. Pic: Prof David Albertini

Human eggs have been fully grown in a laboratory setting for the first time, potentially paving the way for new fertility treatments.

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The eggs were removed from ovary tissue as early as possible and grown in a laboratory up until the point they were ready for fertilisation, according to research published in the journal Molecular Human Reproduction.

If the eggs were healthy it could allow women who were undergoing medical treatments that damage their eggs, such as chemotherapy, to store and save them for future fertilisation.

However, scientists have cast doubts on whether the study proved that the eggs were fully grown in good health.

Lead researcher Professor Evelyn Telfer, of the University of Edinburgh's school of biological sciences, said: "Being able to fully develop human eggs in the lab could widen the scope of available fertility treatments.

"We are now working on optimising the conditions that support egg development in this way and studying how healthy they are. We also hope to find out, subject to regulatory approval, whether they can be fertilised."

He added: "As the authors acknowledge, there is much more important research still to do, but this could pave the way for fertility preservation in women and girls with a wider variety of cancers than is possible using existing methods."

The study, carried out by the Royal Infirmary Edinburgh, the Centre for Human Reproduction in New York and the Royal Hospital for Sick Children in Edinburgh, was supported by the Medical Research Council.